Top of the Basal Hawthorn Unit in Palm Beach County, 2000R. S. Reese and S. J. Memberg, USGS Water Resources Investigations Report 99-4061 (Tallahassee, FL: U. S. Geologi-

cal Survey, 2000) Downloaded from Maps ETC, on the web at http://etc.usf.edu/maps [map #f9106]